The helmeted figure of Mars holds a sword in his right hand, and a shield in his left and looks skywards. Behind him, a fragment of the Zodiac bears the signs of Aries and Scorpio. At the top, we see the angel that, according to Dante, presides over every star.This painting and its companions (P306 to P312) are copies of cartoons for the mosaics at the Chigi Chapel in the Roman church of Santa Mar